Information about why you may not be able to post in the forums, and steps for how to fix it.

Battle.net or game account hacked or compromised

If you experience crashes, blue or black screens, performance issues, or your computer locks up while playing, follow the steps below to resolve these issues.

How to manage your Battle.net profile visibility and chat settings

Out-of-date drivers and operating systems can cause a variety of issues, and are one of the first things to check when a game is having problems.